Mould & Condensation Survey

A damp investigation focuses on water ingress through the building fabric — rising damp, penetrating damp and leaks from plumbing or roofing. It uses moisture meters to trace the path of water into the building. A mould and condensation survey, by contrast, focuses on airborne moisture — humidity, ventilation, heating and lifestyle factors — that leads to condensation on cold surfaces and subsequent mould growth. The two surveys address different root causes, although in some properties both may be present simultaneously. If you have damp patches that feel wet to the touch and worsen after rain, you likely need a damp investigation. If you have black mould, condensation on windows and the problem is worse in winter, you likely need a mould and condensation survey. We can advise which is appropriate for your situation when you contact us.

Black mould — and mould generally — can have significant health implications, particularly for vulnerable individuals. The NHS recognises that living in a damp and mouldy home is associated with an increased risk of respiratory problems, respiratory infections, allergies and asthma. Mould produces allergens, irritants and sometimes toxic substances (mycotoxins) that can cause allergic reactions, exacerbate existing respiratory conditions and, in prolonged exposure scenarios, contribute to the development of asthma in otherwise healthy individuals. The very young, the elderly, people with existing respiratory conditions and those with compromised immune systems are at the greatest risk. Our survey identifies the type, extent and cause of mould so that you can take effective action — removing the mould alone without addressing the underlying cause of condensation will only provide temporary relief before the mould returns.

Our mould and condensation survey starts from £250 plus VAT for a typical residential property. The exact price depends on the size of the property, the number of rooms and the complexity of the issues. We provide a fixed-price quote within 24 hours of your enquiry — the price we quote is the price you pay, with no hidden extras, no travel surcharges and no additional fees for any location within our seven counties (Bedfordshire, Buckinghamshire, Cambridgeshire, Hertfordshire, Northamptonshire, Greater London and Oxfordshire). We are entirely independent — we do not sell ventilation products, dehumidifiers or mould remediation services — so our advice is always impartial and based solely on what your property needs.

No, we do not recommend or endorse any specific mould remediation contractor or ventilation installation company. Our role is to provide an independent, impartial diagnosis and a clear remediation and prevention plan. The recommendations we provide are detailed enough for you to obtain comparable quotes from at least three competent local contractors. This approach keeps us completely independent — we have no financial interest in any treatment company, we do not take commission or referral fees, and our only objective is to give you accurate, unbiased advice. We are happy to review quotes you receive from contractors and offer an opinion on whether the proposed works match our recommendations.

A mould and condensation survey typically takes between 1 and 3 hours on site, depending on the size of the property and the number of rooms affected. A small flat with condensation in one or two rooms may take around an hour; a larger family home with mould in multiple rooms, complex ventilation arrangements and suspected interstitial condensation may take up to three hours. The surveyor will examine every habitable room, take humidity and temperature readings, capture thermal images, test extractor fan performance and assess background ventilation provision. You are welcome to be present during the inspection — the surveyor can explain findings as they go, answer your questions and offer immediate practical advice on reducing condensation in the short term.

We provide mould and condensation surveys across all seven of our counties: Bedfordshire, Buckinghamshire, Cambridgeshire, Hertfordshire, Northamptonshire, Greater London and Oxfordshire. Every surveyor who works with us is based locally and understands the local housing stock, common building types, typical condensation problems and climate conditions in their area. There are no travel surcharges for any location within our coverage area — the price we quote is the price you pay regardless of where you are within our seven counties.